20359436 has 24 divisors (see below), whose sum is σ = 37129344. Its totient is φ = 9757440.

The previous prime is 20359337. The next prime is 20359441. The reversal of 20359436 is 63495302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13286 + ... + 14738.

It is an arithmetic number, because the mean of its divisors is an integer number (1547056).

Almost surely, 2^20359436 is an apocalyptic number.

It is an amenable number.

20359436 is a deficient number, since it is larger than the sum of its proper divisors (16769908).

20359436 is a wasteful number, since it uses less digits than its factorization.

20359436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 20359436 is about 4512.1431714874. The cubic root of 20359436 is about 273.0582154784.

The spelling of 20359436 in words is "twenty million, three hundred fifty-nine thousand, four hundred thirty-six".